I have two Asterisk machines installed on Centos 7.X with Asterisk 16.XX version.
Asterisk Box 1 Contain with Asterisk 16.7.0
On this box, we have 3 SIP trunks and configured. 2 are the Internal SIP trunks with different Asterisk machines which are in the same network. We also have different SIP trunks connected from telecom operators on separate NIC cards and configured.
All the calls are through the SIP trunk from the Operator and Internal SIP trunks are not having any calls.
The issue: The Asterisk Box works fine with 300 -350 Calls. But when it reached more than 350+ we have noticed that the SIP trunk going lagged and after 2-3 seconds it goes unreachable.
When we have less call volume < 200 Calls then in SIP show peers all my trunk will show as OK (<7 MS)
when the call volume increase the sip show peers value OK(>50 MS) is getting increase and after some more calls > 350 Calls then SIP show peers show as OK(1000 MS) and after 2 seconds it will turn to lagged (1500 MS) and in seconds it will change to UNREACHABLE. After some time again the SIP trunk will come as online and the SIP show peers will show as OK.
As checked there is no firewall or Iptables enabled on the Server and the SIP trunks are different operators and Internal SIP trunks too which are going unreachable altogether.
Can anyone help with this?
The same happens with my different asterisk machine also which is having the Asterisk Asterisk 16.1.1 Version.